Multivariable predictors of mortality at 30 days following an injury hospitalisation for children aged ≤16 years, linked hospitalisation and mortality data, Australia, 1 July 2002 to 30 June 2012
| 30 days | ||
| Characteristics* | HR | 95% CI |
| Gender† | ||
| Male | 1 | |
| Female | 1.16 | 1.00 to 1.34*** |
| Age group (years)‡ | ||
| 0–5 | 2.02 | 1.66 to 2.46* |
| 6–10 | 1.28 | 1.01 to 1.64*** |
| 11–16 | 1 | |
| Number of health conditions | ||
| None | 1 | |
| One or more | 0.70 | 0.57 to 0.86* |
| Injury severity | ||
| Minor (ICISS≤0.99) | 1 | |
| Moderate (ICISS 0.942–0.99) | 2.61 | 1.58 to 4.32* |
| Serious (ICISS<0.942) | 57.51 | 36.60 to 90.36* |
| Injury mechanism | ||
| Transport incidents | 2.42 | 1.74 to 3.37* |
| Falls | 0.45 | 0.30 to 0.67* |
| Inanimate mechanical forces | 1.05 | 0.71 to 1.56 |
| Animate mechanical forces | 0.70 | 0.36 to 1.36 |
| Drowning and submersion or other threats to breathing | 3.06 | 2.30 to 4.06* |
| Poisoning | 1.02 | 0.52 to 2.00 |
| Intentional self-harm | 5.00 | 3.41 to 7.33* |
| Assault | 0.98 | 0.61 to 1.58 |
| Other and unspecified injury mechanism | 1 | |
| Location of residence | ||
| Urban | 1 | |
| Regional/remote | 1.16 | 1.00 to 1.35*** |
| Not known | 1.78 | 1.02 to 3.10*** |
| Principal injury type | ||
| Head | 1.54 | 1.14 to 2.08** |
| Neck | 0.94 | 0.53 to 1.66 |
| Thorax | 1.65 | 1.03 to 2.64*** |
| Abdomen, lower back, lumbar spine and pelvis | 0.59 | 0.37 to 0.92*** |
| Upper extremities | 0.19 | 0.09 to 0.40* |
| Lower extremities | 0.14 | 0.06 to 0.28* |
| Other injuries | 1 | |
*Data only available from Australian Capital Territory from 1 July 2004.
† Gender missing for eight children.
‡Age missing for one child.
§Other injuries include: injuries involving multiple body regions, injuries to unspecified parts of trunk, limb or body region, effects of foreign bodies, burns, frostbite, poisoning, complications of trauma and other and unspecified injuries.
*p<0.0001; **p<0.01; ***p<0.05.